– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 pm Tue 11 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 pm Tue 11 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Tue 11 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 8mm), mostly falling on Wed night. Warm (max 25°C on Fri afternoon, min 14°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 25°C on Mon afternoon, min 16°C on Fri night). Wind will be generally light. | |||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | | | | | | |  |  | |  | |
clear | clear | risk tstorm | risk tstorm | clear | rain shwrs | risk tstorm | risk tstorm | risk tstorm | risk tstorm | rain shwrs | risk tstorm | some clouds | some clouds | clear | clear | |
Cloud base (m) | 2200 | 3400 | 2650 | 3400 | 3400 | 3250 | 8550 | 750 | 7100 | 6300 | ||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 1.2 | 3 | — | 0.4 | 1.2 | 1.8 | 0.8 | 1.8 | 0.4 | 0.5 | — | — | — | — |
max °C | 18 | 20 | 22 | 18 | 22 | 24 | 21 | 21 | 25 | 20 | 20 | 23 | 19 | 21 | 24 | 20 |
min °C | 14 | 16 | 22 | 16 | 17 | 24 | 17 | 18 | 24 | 16 | 17 | 23 | 16 | 18 | 24 | 17 |
chill °C | 14 | 16 | 22 | 16 | 17 | 24 | 17 | 18 | 24 | 16 | 17 | 23 | 16 | 18 | 24 | 17 |
Freezing level m | 3500 | 3450 | 3500 | 3450 | 3450 | 3550 | 3550 | 3450 | 3550 | 3450 | 3500 | 3750 | 3750 | 3700 | 3800 | 3900 |
 | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:21 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 8mm), mostly falling on Wed night. Warm (max 25°C on Fri afternoon, min 14°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 3mm), mostly falling on Fri night. Warm (max 25°C on Mon afternoon, min 16°C on Fri night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP8337 | |||||
 | |||||
Bellingham Airport | | ||||
SHIP2013 | |||||
SHIP8628 | |||||
SHIP5291 | |||||
SHIP10767 | |||||
SHIP10269 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.